| 1 | /* printquoted.c -- print a specified string with any necessary quoting.
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| 2 |
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| 3 | Copyright (C) 1990, 1991, 1992, 1993, 1994, 2000,
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| 4 | 2003, 2004, 2005 Free Software Foundation, Inc.
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| 5 |
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| 6 | This program is free software; you can redistribute it and/or modify
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| 7 | it under the terms of the GNU General Public License as published by
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| 8 | the Free Software Foundation; either version 2, or (at your option)
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| 9 | any later version.
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| 10 |
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| 11 | This program is distributed in the hope that it will be useful,
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| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 14 | GNU General Public License for more details.
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| 15 |
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| 16 | You should have received a copy of the GNU General Public License
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| 17 | along with this program; if not, write to the Free Software
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| 18 | Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
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| 19 | USA.
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| 20 | */
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| 21 |
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| 22 | #ifdef HAVE_CONFIG_H
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| 23 | #include <config.h>
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| 24 | #endif
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| 25 |
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| 26 | #include <stddef.h>
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| 27 | #include <stdlib.h>
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| 28 | #include <stdio.h>
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| 29 |
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| 30 | /* Get mbstate_t, mbrtowc(), mbsinit(), wcwidth(). */
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| 31 | #if HAVE_WCHAR_H
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| 32 | # include <wchar.h>
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| 33 | #endif
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| 34 |
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| 35 |
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| 36 |
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| 37 | #include "xalloc.h"
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| 38 | #include "printquoted.h"
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| 39 |
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| 40 |
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| 41 | /*
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| 42 | * Print S according to the format FORMAT, but if the destination is a tty,
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| 43 | * convert any potentially-dangerous characters. The logic in this function
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| 44 | * was taken from ls.c in coreutils (at Sun Jun 5 20:42:51 2005 UTC).
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| 45 | */
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| 46 | void
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| 47 | print_quoted (FILE *fp,
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| 48 | const struct quoting_options *qopts,
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| 49 | bool dest_is_tty,
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| 50 | const char *format,
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| 51 | const char *s)
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| 52 | {
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| 53 | if (dest_is_tty)
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| 54 | {
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| 55 | char smallbuf[BUFSIZ];
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| 56 | size_t len = quotearg_buffer (smallbuf, sizeof smallbuf, s, -1, qopts);
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| 57 | char *buf;
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| 58 | if (len < sizeof smallbuf)
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| 59 | buf = smallbuf;
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| 60 | else
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| 61 | {
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| 62 | /* The original coreutils code uses alloca(), but I don't
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| 63 | * want to take on the anguish of introducing alloca() to
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| 64 | * 'find'.
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| 65 | */
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| 66 | buf = xmalloc (len + 1);
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| 67 | quotearg_buffer (buf, len + 1, s, -1, qopts);
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| 68 | }
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| 69 |
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| 70 | /* Replace any remaining funny characters with '?'. */
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| 71 | len = qmark_chars(buf, len);
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| 72 |
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| 73 | fprintf(fp, format, buf); /* Print the quoted version */
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| 74 | if (buf != smallbuf)
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| 75 | {
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| 76 | free(buf);
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| 77 | buf = NULL;
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| 78 | }
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| 79 | }
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| 80 | else
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| 81 | {
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| 82 | /* no need to quote things. */
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| 83 | fprintf(fp, format, s);
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| 84 | }
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| 85 |
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| 86 | }
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| 87 |
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